Use LICENSE file in docs.
Use LICENSE file in docs.

We now import the LICENSE file in `docs/license.rst`. This avoids possible
inconsistencies and reduces the work needed on every license update.

jzorrof/eve,bcrochet/eve,kalbasit/eve,mugurrus/eve,stratosgear/eve,elpoisterio/eve,mcreenan/eve,opticode/eve,amagdas/eve,yanyanqin/eve,EasonYi/eve,julianhille/eve,kidaa/eve,kynan/eve,hustlzp/eve,matthieuprat/eve,sebest/eve,superdesk/eve,pjs7678/eve,eduardomb/eve